DOUBLE ADDITION
SUBTRACTION
CHALLENGE ADDITION
100
4
what is 2+2
100
5
What is 10-5
100
55
What is 19+36
200
8
What is 4+4
200
10
What is 20-10
200
29
What is 13+16
300
10
What is 5+5
300
2
What is 4-2
300
83
What is 71+12
400
20
What is 10+10
400
50
What is 100-50
500
100
What is 50+50
500
12
What is 20-8
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